retentive
ETYM Cf. French rétentif.
Tending to retain, having the power, property, or capacity of retaining ; especially; retaining knowledge easily.
aware · impermeable · long · mindful · ownership · possession · recollective · tenacious
retention from salary · retention guarantee · retention money · retention period · retention time · retentive · retentively · retentiveness · retentivity · retenue · retest